Undwelable or Undwellable: How To spell?
The word Undwelable is misspelled against Undwellable, an adjective meaning "Uninhabitable."
Undwellable has double "ll" is mispronounced as "l"Remember double 'LL' in between the strings undwe & able which should not be misspelled with single 'L'
Wrong Spelling:  undwe-l-able  Correct Spelling:  undwe-ll-able 
Explore spell check of Undwellable to spell without errors.